Improvement in eolling-mills



R. M. BASSETT.

ROLLING MILL.

No. 64,737. `Patented Maylll, 1867.

V3X iZ7 5%! @uiten tatrs gsfsnf @fitta ECYAL M. EAssErT, or DERBY, CONNECTICUT, `AssIGNon To HIMSELE AND. THECDCRE s. vBAssETEx- CF SAME PLACE.

Laim raam Nol 64,737', daad my 14, .1867.

' IMPROVEMENT 1N ROLLING-MILLS.

Bilge Srlgetule referrer tu iu there etters iraient mit making tati at the sante.

.TO ALL WHOM IT MAY CONCERN:

Be ,it known that I, RoYAL M. BAssE'rr, of'Derby, of New Haven county, in the State of Connecticut, have invented certain new and useful Improvements in Rolling-Mills; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, making part of this application.

My invention relates to a novel method of adjusting the lower roll of three higher rolls) ofrolling-mills.

Y Previous to my invention it has been customary to regulate or adjust the' lower roll by means of a-vertically arranged screw-shaft working in a nu't set into the lower portion df the frame, with its upper en d bearing against the lower' side of the journalbox, and its lower end formed with a suitable head .by which it could be turned. There are several and serious objections to this inethod of adjusting the lower roll, among which may be mentioned the liability of the scrcwto work down (and allow thebox to'get out of adjustment) by the heavy jar of working the rolls, and the great inconvenience arising from having to get down into the ,pit, which -is always wet, to work the adjusting screw. All these objections I eiiectually overcomeby my invention, (which also 'involves lessexpense of construction whichA consists'nl forming or providin'g the lower bex with an inclined lower surface, andthe employment of an adjustable horizontallyfarranged wedge which may be drawn back and forth in its seat by a screw-shaft provided with a hand-wheel above the F pit, as will be hereinafter .more fully'describedl Y 'Io enable those skilled in' the art to make and use my invention, I will proceed to describe it more fully, r. wring by letters to the accompanying drawings, in whiohi Figure 1 is an elevation of a mill (or set of rolls) mounted according to my invention; and

Figure 2 is a detail sectionalview at the line xa, fig-1.

In the several figures the same parts are designated by the same letter 'of reference.' i

A vis the frame of the mill (or one of them) mounted in the usual manner on the bed-plate B, and between which frames, and under the rolls, is formed the usual pit The frames are connected at c c by rods or braces in the ordinary nanner.A D, E, and Fare the journals respectively of thotop, middle, and lower .rolls of a three-high set of rolls. The middle roll Vhas its journals supported by boxes H H in the usual manner, (with the exception of a peculiarity of the box which Iwill presently explain,)and the nppernroll has its journals working in bearings G g', the lower one of which is supported1 by the pendent rods z z, and the upper half, G, held'down and 'adjusted downward by a screw-shaft T, in a manner' familiar'to those acquainted with this class of machinery. The 'journals of the lower roll are mounted in boxes, one of which is seen. at I 7c. These boxes may be formed each with an inclined lower face, c. Under each of. these boxes is' arranged, to slide` longitudinally, a wedge-shaped block L, (which bears on the frame at w,) and each of these wedge-'shaped blocks L is provided with a screw-rod, P, which extends along through a suitable box at g,-and is provided with o. hand-wheel, S, as shown at fig. 1. As it becomes necessary. to raise the lower roll or allow it to descend, the hand-wheels S are turned in one or the other direction, as' desired, and the wedge-shaped blocks drawn in one orthe other direction, to wedge up or let down the boxes Ik. I have previously alluded .to a peculiarity in the construction and application of the boxes which I willnow explain. By reference to fig'. 2 it will be seen that the ange portion of the box G is on the outer side or face of the frame A. The bolts o project outward from the frame A, and through vertical slots m (see iig. 1) in the flange portion of boxes, so that by turning up n the nut andjamb-nut on bolts o the boxes-may bo set up against the shoulders of the rolls (as they weer) and so that whenever it becomes necessary to take out the boxes they can be all withdrawn from their seats in the' frames A without disturbing the frames, which cannot be done where the boxes have their Banged portions on the inner (or adjacent) sides of the said frames. v In explaining more particularly the operation of my invention, I need refer only to the adjusting mechanism of lowerroll, as lthis constitutes the feature of my invention. It will be understood, then, that by simply turning the hand-wheels S, the Ascrew-shafts P will be made to slide the wedgeshaped4 supporting blocks L, which effect the lowering and raising of the boxes I. And it will be seen that since the angle of the wedges r is slight, (with a liorizontallinv) .the jarring on them cannot, while they are held by the screw P, change the positions. The hand-WheeisS extend up above the pit, so that the workman does not have to go down into Vthe wet to handle `the adjusting device; and, by means of my invention I can dispense with the lan-ge screw and nut formerly used, and thus very much reduee the cost of the apparatus.

Having fully' explained myinventon, what I claim as new in rolling-mills, und desire to secure by Letters The employment, in combination with the box, of the lower roll, of the adjusting wedge L, incinell stent.I

K, screw-shaft I?, and hand-wheel S, or its equivalent, the whole to operate as specified,l for the purpose set forth.

In testimony whereof I have hereunto set my hand and Aseal this 21st day of July, 1866.

ROYAL M. BASSETT. [L 3.] Witnesses f' DAVID Lumine, WM. B. Woos'rnn. 

